微热管阵列光伏光热组件瞬时效率实验研究  

THE EXPERIMENTAL RESEARCH ON MICRO HEAT PIPE ARRAY PV/T MODULE'S INSTANTANEOUS EFFICIENCY

作　　者：王林成[1] 全贞花[1] 赵耀华[1] 邓月超[1] 王岗[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100124

出　　处：《太阳能学报》2015年第3期539-545,共7页Acta Energiae Solaris Sinica

基　　金：北京市自然科学基金重点项目(Z1004020201201);国家科技支撑计划(2012BAA10B02)

摘　　要：将新型平板热管——微热管阵列应用于太阳电池的散热，制成光伏光热一体化组件，在降低电池温度提高发电效率的同时对余热进行收集利用，达到热电联供的目的。为了测试微热管阵列光伏光热组件的性能，对该组件进行瞬时效率实验，测得瞬时热效率曲线的截距η。可达到41．4％，斜率FRUL为3．95，20℃入口温度时的太阳能利用总效率可达到50％以上，综合性能效率达70％以上；瞬时热效率随室外环境温度的升高而增加，随冷却介质人口温度的增加而减小，环境温度为6℃和19℃时的瞬时热效率相差10％以上，人口温度是20℃的瞬时热效率比40℃时高8．5％。背板温度是影响电效率的关键因素，在测试期间，光伏光热组件电效率保持在10．5％～12-3％之间。A new fiat heat pipe-micro heat pipe array （MHPA） was used in solar cell cooling. The photovoltaic/thermal （PV/T） integration components based on the MHPA can achieve the purpose of cogeneration by collecting and utilizing waste heat while reducing the battery temperature to improve power efficiency. In order to test the performance of PV/T module based on MHPA, instantaneous thermal efficiency test was performed to this module. The intercept of measured instantaneous thermal efficiency curve can reach 41.4%, the slope is 3.95 , and solar energy utilization total efficiency in the condition of 20 ℃ inlet temperature in can reach more than 50%, and comprehensive performance efficiency can reach above 70%. Instantaneous thermal efficiency increases with rising of the outdoor environment temperature, and decreases with increase of cooling medium inlet temperature. The difference value of instantaneous thermal efficiency is more than 10% when the environment temperature is 6 ℃ and 19 ℃. The PV/T module＇ s instantaneous thermal efficiency of 20 ℃ inlet temperature is 8.5% higher than 40 ℃. The temperature of PV componet is the key factor of the influencing electric efficiency. The PV/T module＇ s electric efficiency is kept between 10.5% and 12.3% during the test.

关 键 词：微热管阵列 光伏光热 瞬时效率 效率曲线 

分 类 号：TM615[电气工程—电力系统及自动化]